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Articles on Climate change

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NASA/Goddard Space Flight Center Scientific Visualization Studio

Satellites reveal ocean currents are getting stronger, with potentially significant implications for climate change

Our team discovered clear changes in the distribution and strength of ocean eddies. These changes have never been detected before.
U.S. President Joe Biden, with presidential climate envoy John Kerry, opened the Leaders Summit on Climate on April 22, 2021, by announcing new U.S. targets. AP Photo/Evan Vucci

New US climate pledge: Cut emissions 50% this decade, but can Biden make it happen?

Two energy and climate policy experts take a closer look at the Leaders Summit on Climate, the US pledge and today’s industrial reality.
Wind turbines near Glenrock, Wyo. AP Photo/Matt Young

The US electric power sector is halfway to zero carbon emissions

Fifteen years ago electric power generation was the largest source of US greenhouse gas emissions. Now the power sector is leading the shift to a clean energy economy.
As this reconstructed village shows, Vikings made it as far as Newfoundland during the Medieval warm period. Wikimedia/Dylan Kereluk

Climate explained: what was the Medieval warm period?

During the European Middle Ages, parts of the world experienced warming similar to that between 1960 to 1990. But the rising temperatures we’re observing now are global and exceed the past record.
Aerial view of Lake Powell on the Colorado River along the Arizona-Utah border. AP Photo/John Antczak

Interstate water wars are heating up along with the climate

The Supreme Court recently dealt defeat to Florida in its 20-year legal battle with Georgia over river water. Other interstate water contests loom, but there are no sure winners in these lawsuits.
A helicopter drops water on a forest fire in Alaska. Michael Risinger/U.S. Army National Guard

As extreme fires transform Alaska’s boreal forest, deciduous trees put a brake on carbon loss and how fast the forest burns

A new study finds more deciduous trees like aspen are growing in after severe fires in the region, and that has some unexpected impacts.

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